Wrench.



No. 797,595. PATBNTED AUG. 22, 1905. Gr. MoKERGI-IER.

WRENCH.

APPLICATION FILED JAN. s. 1905.

5% 16.150265 MCMERC HER rrp srans PATENT OFFICE.

no. 7er/,595,

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application led January 3, 1905. Serial No. 239,423.

To @ZZ whom t potty concer-nf Be it known that I, G eolien MoKnRoI-Inu,a citizen of the United States, residing at Jackson, in the county ofJackson and State of Michigan, have invented certain new and usefulImprovements in Wrenches; andI do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to certain improvements in wrenches,more'parti'cularly of the pipe type. It has for its object to providesimplicity of construction, strength, or durability, and cheapness ofmanufacture in a device of this nature.

The invention consists in the details of construction and combinationsof parts hereinafter described, and more particularly pointed out in theclaims concluding this specification.

In the accompanyingdrawings, illustrating the preferred embodiment of myinvention, Figure 1 is a side view of a wrench constructed in accordancewith my invention. Fig. 2 is an edge view thereof; and Fig. 3 is avertical sectional View of part of the handle and the sleeve, showinghow the parts are connected and the arrangement of the spring-pressedpin or button, the rest of the wrench being broken away.

While the preferred embodiment of my invention is fully shown in theaccompanying 4drawings and its construction and operation are clearlydescribed herein, I reserve the right to make such changes from theconstruction shown and described herein as the scope of the claimshereto appended will permit.

In carrying out my invention I provide a lixed jaw or handle member',bifurcated to receive the reduced extension of the sleeve in which ismounted the movablejaw adapted to be operated by a nut, as is common.Said bifurcated end of said handle member is also adapted to receive thereduced portion of the serrated or teeth-carrying piece of the fixedjaw. The reduced extension of said serrated piece has aninwardly-prejecting portion adapted to engage a similarly-shaped.depression or groove in the extension of the sleeve, whereby said4sleeve is held in place without the use of a pivot pin or screw, asingle screw only being necessary to hold the teeth-carrying' piece inplace. The lower portion of said extension of said sleeve has a shoulderadapted to engage a shoulder at the base of the bifurcation, whereby thesleeve is eifectually connected to said handle member. Extensions at theends of the sides of the fork provide bearings for the sleeve when it isrocked, whereby all strain on the serrated piece and itssecuringscrew-boltis removed. A socket holding a spring-pressed pin orbutton is arranged near the forward edge of the base of saidbifurcation. Said pin is adapted to engage the lower end of theextension of the sleeve to hold the movable jaw normally in contact withthe pipe or article acted upon.

Referring more particularly to the drawings, 1 is, the handle member,having a bifurcation 2 at its end, the forks 3 having upper rearwardextensions 1. The base of said bifurcation has a shoulder 5 near therear edge and a socket 6 near the front edge of said handle member. Saidsocketis bored somewhat larger near its outlet, forming` a'seating-ledge7 for the coiled spring 8, mounted around the pin 9, the other end ofsaid spring abutting below the head of said pin. The teeth-carryingpiece 10, having the intermediate downward projection 11, is securedbetween the ends of the fork by a screw-bolt 12, passing throughsuitable apertures provided in said parts.

l he sleeve 13 carries the slidable jaw member 14, which is operated bymeans of the nut 15. Said sleeve is provided with an extension 16,having a depression or groove 17 in its upper edge adapted to lit aroundthe projection 11 of said teethcarrying piece 10. The lower forward edgeprojection 18 of said sleeve extension engages the spring-pressed pin 9,whereby the movable jaw is normally held in position to grip the articleengaged,

and said projection is adapted to abut against the shoulder 5 at thebase of the bifurcation of said handle member, whereby the rockingmovement of said sleeve and movable jaw is confined within the desiredlimits.

It will be noted that the rear extensions 4 engage one of the uppercorners of the sleeve, thereby removing all the strain on the screwboltincident to most rocking jaw-wrenches, the protection from saidteeth-carrying piece in mywrench merely serving to hold the partstogether. It will also be noted that in my present device the usualpivot for the sleeve is done away with and the whole construction issimplified and rendered more durable thereby.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-

l. In a wrench, the combination with a bifurcated handle member, of asleeve carrying a movable jaw and having a reduced extension engagingsaid bifurcation, said extension having a depression in its upper edge,a fixed jawpiece secured in the end of the bifurcation and end of saidbifurcation and having a projec tion engaging the depression in theupper edge of said sleeve extension whereby said sleeve extension isretained in said bifurcation.

3. In a wrench, the combination with a loifurcated handle member, of asleeve carrying a movable jaw and having a reduced extension engagingsaid bifurcation, said sleeve extension having a shoulder on its loweredge adapted to engage a shoulder in the base of the bifurcation and adepression in its upper edge, and a serrated jaw-piece secured in theend of said bifurcation and having a projection engaging the depressionin the upper edge of said sleeve extension whereby said sleeve extensionis retained in said bifurcation, a spring-pressed pin mounted in asocket in the base of said bifurcation and engaging' the lower edge ofsaid sleeve extension.

fi. In a wrench, the combination with a bifurcated handle member, of asleeve carrying a movable jaw and having' a reduced extension engagingsaid bifurcation, said extension having a depression in its upper edge,a fixed jawpiece secured in the end of the bifurcation and having aprojection engaging' the depression in said sleeve extension, wherebythe upper edge of said edge is retained in said bifurcation, means toconfine the lower edge of said sleeve extension in said bifurcation, andrear extensions on the sides of said bifurcation adapted to engage thesleeve and act as a fulcrum therefor when it is rocked.

5. In a wrench, the combination with a bifurcated handle member, of asleeve carrying a movable jaw and having a reduced extension engagingsaid bifurcation, said sleeve extension having a shoulder on its loweredge adapted to engage a shoulder in the base of the bifurcation and adepression in its upper edge, and a serrated jaw-piece secured in theend of said bifurcation and having a projection engaging' \thedepression in the upper edge of said sleeve extension, whereby saidsleeve extension is retained in said bifurcation, a spring-pressed pinmounted in a socket in the base of said bifurcation and engaging thelower edge of said sleeve extension, and rear extensions on the sides ofsaid bifurcation adapted to engage the sleeve and act as a fulcrumtherefor when it is rocked.

In testimony whereof I afix my signature in presence of two witnesses.

GEORGE MOKERCHER.

N/Titiiesses:

PETER E. ,ULRIcKsom FRANCIS E. CLAY.

